Brake-shoe.



No. 837,356. yPlaTkNTBD DEC. 4, 1906.4 A. L. sT-REETER. l

` BRAKE sHoB. 4

' AAAAAAAAAAAA IL'ED Nov. 2n. 1905.'-

1n and in other instances dressing or trim- :greatly worn-theenlargedflange is apt to `ToctZZ` whom it may concern:

Be it known that I, ALFRED L. STREETER,

4UNITED STATES PATENT' OFFICE.

ALFRED L. SIREETER, OF CHICAGO, ILLINOIS, ASsIeNOR To AMERICAN BRAKESHOE a FOUNDRY COMPANY, OF JERSEYCITY, NEW JERSEY, ACORPORATIONOF NEWJERSEY.

BRAKE-SHOE. e

Specification of Letters Patent.

Application filed November 22, 1905. vSerial No. 288,519.

Patented Dec. 4, 1906.

acitizen of the United States, and a resident fofChicago, in the countyof CookV and State `of Illinois, have made and invented certain `new anduseful Im rovements in Brake- Shoes, ofwhich the ollowi'ng is aspecifica- My inventionrelates to an improvement in brake-shoes, and`more particularly to that kind having the face or tread thereof formedof relatively hard and soft metals to contact i l with the `wheel-treadand with a groove to receive the flange of the wheel.

In shoes of this character it has been found' that by reason of thehard-metal insert forming part of the wearing-surface thereof and ilfemployed to prolong the life of the shoe and also by reason of thefriction of the wheel on the rail the *tread ofthe wheel is worn awayAmuch more rapidly than the iiange thereof,

soy that in the course of time the flange is out of all proportion insize or diameter to that of the wheel, `andi in some cases-that is, in

those instances where the tread becomes strike in the groove of thefrogs, and in the case of grooved rails the wheel is apt to 'ride on theedge of the enlarged flange. Various `ways and. means have been devisedwith a `viewof overcoming these defects or difficul- 1` ties-forinstance,

openings have been l formed inthe flange-receiving groove of the Shoe toform cutting or dressing edges. In other instances inserts have beencast thereming devices have been detachably secured to the shoe in suchpositions as to cut or dress the tread of the wheel and also the.

fiange thereof. Various objections, however, have been urged againstthese devices,

f `The object of my present invention is to shoe which will effectuallytrim or dress the l iiange of the wheel as the tread of the lattergradually wears, and this without materially adding to the cost of theshoe; and with this andfurther ends in view the invention conv sists incertain novel features of construction, as will be hereinafter fullydescribed and pointed out in the claims. l

In the accompanying drawings, Figure 1 is a plan view of a shoeconstructed in accordance with my invention. tional View taken onthe'line 2 2 of Fig. l. Fig. 3 is a cross-sectional view taken on theline 3 3 of Fig. 2, and Fig. 4 is a view in per- .spective of thedetached dressing-insert.

By reference to the drawings it will be seen that the shoe constructedwith a castiron body is of the usual `form-that is, provided with theordinary bearing-surface 5 to contact with the tread of thewheel andwith the flange-receiving groove 6.

Fig. 2 is a secand also to provide the relativelv hard metal to increaseor lengthen the life` df the shoe, I employ an insert preferably formedas illustrated in Fig.. 4-that is, with a sinuous body l 7in lengthnearlylthat of the shoe in which it is to be inserted, said insert beingmade of steel, chilled cast-iron, hard white cast-iron, or, in fact, anysuitable metal suiciently hard to effectually cut, dress, or trim theiiange of theiwheel and add' to theshoe the necessary compositewearing-surface.

From the ends of the sinuous body 7 of this insert extend the transversecutting extensions 8, curved or grooved, as illustrated at 9, in orderto properly receive the flange of the Wheel and diagonally to the lengthof the body 7 in order that its edges may effect a shearing cut, thesaid extensions 8 extending'in a direction toward each other in' orderto properly trim the flange while the wheel is traveling or rotating ineither direction. The central portion of the body `7 is also `providedwith the cutting extension 10, formed in all material respects like theextensions 8, excepting that the sides thereof instead of being parallelconverge, as illus- 'trated in Fig. 3, or diverge, as illustrated inFig. 1, so that one side thereof will Vbe substantially parallel withone extension'S and the other side thereof substantially parallel withthe other extension 8, one side of this central extension 10 therebycutting or trimming the flange of the Wheel when turning in onedirection and the opposite side of said IOO- extension cutting ortrimming the flange When the Wheel is turning in the opposite direction.

In practice this insert is incorporated in the shoe While the latter isbeing cast or molded, the insert having been previously formed andproperly located in the mold, the cast-iron being poured around it. Inorder to securely fasten or anchor the same in the cast-iron body of theshoe, the sides of both the body and cutting extensions are madedovetailed, the top or Wider portions thereof lying adjacent to the topor upper surface of the shoe, this construction and arrangementpreventing the insert from becoming loose or accidentally disengagedfrom the body of the shoe.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A brake-shoe comprising a Wearingbody of relatively soft metal, andan insert formed of relatively hard metal, said insert being embedded inthe tread of the shoe and having integral trimming extensions at itsends embedded in the lange-receiving groove of the shoe and arrangeddiagonally to the body of theinsert and extending in a direction towardeach other.

2. A `brake-shoe comprising a Wearingbody forrned of relatively softmetal and an insert of relatively hard metal, the body of said insertbeing embedded in the tread of said shoe and having cutting extensionslocated in the flan e-receiving groove, said extensions being ormed atan angle to the body of said insert and extending in a direc- -tiontoward each other, substantially as described.

3. A brake-shoe comprising a relatively soft-metal Wearing-body, and aninsert formed of relatively hard metal, the body of said insert beingembedded in the tread of said shoe and having converging trimmingextensions located in the flange-receiving groove of 'said shoe,substantially as described. K

4. A brake-shoe comprising a Wearingbody of relatively soft metal, andan insert of relatively hard metal, the body of said insert beingembedded in the tread of said shoe and provided at its ends With cuttingextensions located in the ilan e-receiving roove thereof said extensionseing integra With the body of the shoe and being curved lconformably tothe flange-receiving groove, and arranged at an angle to said body andto each other, substantial y as described.

5. A brake-shoe comprising a Wearingbody of relatively soft metal, andan insert of relatively hard metal the body of said insert beingembedded in the tread of said shoe, and having end and central cuttingextensions located in the flange-receiving groove of .said shoe said endextensions being arranged angularly to each other and to the body oftheinsert, substantially as described.

6. A brake-shoe comprising a Wearingbody vof relatively soft-metal, andan insert of relatively hard metal, the body of said insert beingsinuous in its length and embedded in the tread of said shoe, and havingtrimming extensions located in the flangereceiving groove of said shoe,said end extensions being arranged angularly to each other and to thebody of the insert, substantially as described.

'7 A brake-shoe comprising a Wearingbody of relatively soft metal and aninsert of relatively hard metal, the body of said insert being sinuousin its length and embedded in the tread of said shoe, said insert beingprovided With cutting extensions at its end and central portions, thelatter being located in the flange-receiving groove of said shoe, saidend extensions being arranged' angularly to each other and to the bodyof the insert, substantially as described.

Signed at Chicago, in the county of lCook and State of Illinois, this16th day of November, A. D. 1905.

ALFRED L. STREETER.

Witnesses:

F. L. WHITcoMB, C. K. KNIGKERBOCKER.

